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Foamstab AC 300 is a high-performance, solvent-based defoamer and de-aerating additive engineered for industrial and automotive coatings. It features a specially formulated acrylic/polyvinyl-ether polymer system that delivers superior de-aerating and anti-popping performance across a wide range of solvent-borne paints and varnishes.
Whether used in architectural coatings, floor paints, heavy-duty industrial finishes, automotive OEM/coating, coil coatings or refinishes — AC 300 ensures reliable foam suppression and air-release right from dispersion through drying.
The product helps eliminate pinholes, craters and surface defects, thus ensuring smooth, uniform, defect-free films with excellent flow and leveling. Compatible with alkyd, acrylic, polyester, polyurethane, epoxy and many other resin systems, AC 300 is versatile and easy to incorporate. Its low required dosage (typically 0.5–1.5% of the formulation) offers cost-effective performance without compromising quality. Use AC 300 to enhance film clarity, improve coating reliability and achieve consistent, high-performance results even in demanding, high-solids or heavy-duty paint applications.
Anti-foam additive, high-efficiency defoamer and de-aerating agent
Acrylic / Polyvinyl-ether polymer-based solvent additive (advanced de-aerating + defoaming chemistry)
Approx. 0.88 – 0.92 g/cm³
75%
Aromatic Hydrocarbons / Ester Solvent Blend (similar to FLOWLEN AC-300 class)
30°C (Closed Cup)
3906 90 90
Not regulated
Clear to amber liquid
Automotive OEM coatings and refinishes
Industrial machinery & equipment coatings
General metal coatings, primers, and topcoats
Protective & heavy-duty coatings
Floor coatings and maintenance paints
High-build primers and heavy-duty anticorrosive coatings
High-solids alkyd, acrylic, and polyester systems
Fast-drying & quick-cure formulations pro
Basecoats, clearcoats, and refinish systems
Underbody coatings and protective layers
Solvent-based enamels
Alkyd decorative paints and varnishes
Coil coatings
Can coatings
Wood coatings & clear varnishes
PU-based and epoxy-based solvent coatings
Milling, grinding, dispersion stability, and deaeration
Systems requiring strong anti-popping performance
| Parameter | Value / Description |
|---|---|
| Appearance | Clear to amber liquid |
| Composition | Acrylic / Polyvinyl-ether polymer–based de-aerating & defoaming additive |
| Active Content (Non-Volatile Matter) | 75% ± 2% |
| Density (25°C) | 0.88 – 0.92 g/cm³ |
| Solvent System | Aromatic hydrocarbons / ester solvent blend |
| Flash Point | > 30°C (Closed Cup) |
| Viscosity | Low–medium viscosity, easy to incorporate |
| Compatibility | Solvent-borne alkyd, acrylic, polyester, polyurethane & epoxy systems |
| Odour | Mild solvent |
| pH | Not applicable (non-aqueous) |
| Shelf Life | 12 months (sealed container) |
Rapidly eliminates surface foam and entrapped air during grinding, dispersion, and application.
Strong de-aerating performance avoids popping defects commonly seen in high-solids and fast-drying coatings.
Enhances levelling, clarity, and overall appearance, especially in automotive and high-performance coatings.
Delivers strong efficiency at low dosages, making it cost-effective for premium formulations.
Works seamlessly with solvent-borne alkyd, acrylic, polyester, epoxy, and polyurethane systems.
Maintains defoaming performance during milling, high-speed dispersion, and spray application.
Designed to handle heavy-duty, fast-curing formulations that are prone to microfoam and defects.
Mixes well into millbases or finished systems without causing haze or surface disturbances.
FOAMSTAB 520 is a polymer-based, silicone-free defoamer formulated in a hydrocarbon solvent system with a low flash point, and must be handled as a flammable liquid.
Vapors may form flammable mixtures with air near heat or ignition sources.
Prolonged or repeated exposure may cause mild skin or eye irritation.
Use only in well-ventilated areas to avoid inhalation of vapors or aerosol mist.
Avoid direct contact with skin and eyes; wear protective gloves, goggles, and suitable clothing.
Do not smoke, eat, or drink while handling the product.
Ensure proper grounding and bonding when transferring material to prevent static discharge.
Always keep the container tightly closed after use.
Store in a cool, dry, and well-ventilated area, away from heat, sparks, open flames, and other ignition sources.
At low temperatures, FOAMSTAB 520 may show slight turbidity or separation; warm gently to ~40 °C and mix well before use.
Protect from direct sunlight and store in original, properly labeled containers.
Inhalation: Move affected person to fresh air and keep comfortable. Seek medical attention if symptoms appear.
Skin Contact: Wash thoroughly with soap and water. Remove contaminated clothing. Seek medical attention if irritation develops.
Eye Contact: Rinse with clean water for several minutes. Remove contact lenses if present. Seek medical assistance if irritation persists.
Ingestion: Do not induce vomiting. Rinse mouth and seek immediate medical attention.
Use foam, CO₂, dry chemical, or water spray to extinguish.
Burning may produce irritating fumes and combustion gases.
Firefighters should wear full protective gear and self-contained breathing apparatus (SCBA).
Eliminate ignition sources and ensure good ventilation.
Absorb spilled material with inert absorbents (sand, diatomaceous earth, universal absorbent).
Collect residues in suitable containers for disposal as per local regulations.
Prevent contamination of drains, surface water, or soil.
Avoid uncontrolled release into the environment.
Dispose of waste material, absorbents, and containers strictly in accordance with local disposal rules.
FOAMSTAB 520 is supplied as a technical-grade industrial chemical and is not intended for food-contact applications.
Store FOAMSTAB 520 in a cool, dry, and well-ventilated area, away from direct sunlight and heat sources.
Keep containers tightly closed when not in use to prevent contamination and solvent loss.
Avoid storing near sparks, open flames, or ignition sources, as the product contains a low-flash hydrocarbon solvent.
If stored below 0 °C, the product may exhibit slight turbidity or separation.
To restore full uniformity, warm gently to approx. 40 °C and stir well before use.
Do not expose sealed containers to temperatures above 45–50 °C to prevent pressure build-up.
Ensure adequate ventilation during use to avoid inhalation of vapors.
Wear appropriate PPE, including gloves, goggles, and protective clothing.
Do not eat, drink, or smoke while handling the product.
Avoid splashing or high-speed addition to prevent localized over-foaming or crater formation.
Use only the original, properly labeled containers supplied by the manufacturer.
Ensure drums and containers are always grounded and bonded during transfer to prevent static discharge.
Use pump or controlled pour methods—avoid rough handling or dropping containers.
Keep away from strong oxidizing agents, acids, and alkalis.
FOAMSTAB 520 remains stable for at least 12 months under recommended storage conditions.
Re-homogenize gently if stored for a long time.
In case of small spills, absorb with inert absorbents like sand or universal absorbent.
Collect the absorbed material into suitable containers for disposal as per local regulations.
Avoid letting the product enter drains, soil, or natural water bodies.
Keep suitable extinguishing media nearby: foam, CO₂, dry powder, or water spray.
Ensure fire protection systems are in place for storage areas containing flammable liquids.
FOAMSTAB 520 is an industrial-grade additive and must not be used in food-contact applications.
Follow all applicable local safety, environmental, and storage regulations.
Ideal for laboratory use, small batch production, and formulation trials.
Suitable for medium-scale users and consistent monthly consumption.
Economical option for bulk users and large-volume manufacturing facilities.